This track
looked very similar to standard S gauge, except it had one nail hole in the
center of the tie, rather than two nail holes on the tie the outside of each
rail. HO catalog illustrations use photos of the S gauge track, as the
two holes can be easily seen. This track was promoted as making model
railroading possible on a standard card table. The track formed a
circle that measured 28 1/2 inches in diameter, It was offered concurrently
with the standard Bakelite base track that had been offered since 1947 which
formed a 32 inch diameter circle.